Molding-flask.



No. 807,928. PATENTED DEC. 19, 1905. F. J. HEPP & G. J. BORN.

MOLDING FLASK. APPLICATION FILED FEB. 15,1905.

7 WITNESS S: 2 I a Z I INVENTORS k .44

I .I y d 7ATTORNEY UNITED STATES PATENT OFFICE.

FRANK J. HEPP AND GEORGE J. BORN, OF PITTSBURG, PENNSYLVANIA, ASSIGNORS TO WVESTINGHOUSE ELECTRIC AND MANUFACTURING GOM- PANY, A CORPORATION OF PENNSYLVANIA.

MOLDlNG-FLASK- Specification of Letters Patent.

Patented Dec. 19, 1905.

Application filed February 15, 1905. Serial No. 245.680.

'[0 all whom it may concern.-

Be it known that we, FRANK J. HEPP and GEORGE J. BORN, citizens of the United States, and residents of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in MoldingFlasks, of which the following is a specification.

Our invention relates to flasks employed in foundry practice, and especially to such flasks as are applicable to the molding of intricate patterns requiring many divisions.

The object of our invention is to provide a simple and effective means for adjusting the depth of foundry-flasks to suit a variety of similar patterns. I

Patterns for controllerdrum spiders and other similar castings must be divided at frequent intervals, and their manufacture has heretofore necessitated carrying in the foundry stock a great number of flasks all of the same general dimensions, but differing slightly in depth to suit each division of the pattern. This is a decided disadvantage and may be obviated by the use of our invention.

Our invention is illustrated by means of the accompanying drawings, of which- Figure 1 is an elevation of a compound flask constructed in accordance therewith, and Fig. 2 and Fig. 3 are respectively a plan and a cross-section of a simple flask similar to those shown in Fig. 1.

The flask comprises two rings, one of which is provided with an annular projection which engages a corresponding annular groove in the surface of the other, so that they may be moved relatively around their common center. The outer ring is cut at one point and is provided with a clamping-ear on each side of the cut, so that by drawing the ears toward each other the two rings may be rigidly fastened together. The engaging surfaces of the rings outside the annular groove and projection are provided with inclined surfaces that terminate in shoulders or notches. When the shoulders or notches are in engagement, they permit relative circumferential movement of the rings in one direction only, and the inclined surfaces cause the rings to separate gradually if either of them is rotated with reference to the other.

In detail an inside ring 1 is provided with an annulargroove2,:whichziszconstructedjo receive an annular flange 3 on an outside clamping-ring 4 and is also provided with a series of guide-ears 5, drilled to receive guiderods 6, which may pass through the ears 5 when a plurality of similar flasks are used for molding a single casting.

A flange 7, which is formed at the outside edge of the ring 1 when the groove 2 is cut, is provided with a plurality of inclined surfaces that terminate in shoulders or notches 8, 9, 10, and 11, which are spaced ninety degrees apart, the lowest points of the inclined surfaces being substantially at the same level as the bottom of the groove 2.

The outer ring 4 is provided with a plurality of inclined surfaces that terminate in shoulders or notches 12, 13, 14, and 15, Which correspond to the notches 8, 9, 10, and 11 of the ring 1 and are constructed to interlock with the same in such a manner that rotation of one ring on the other is prevented in one direction, while rotation in the other direction separates the flange 3 from the bottom of the notch 2 and increases the depth of the flask to an amount that is limited only by the space between the highest and lowest points of the inclined surfaces. The outer ring 4 is provided with a radial cut 16, at each side of which is a clamping-ear 17, so that when the ears 17 are drawn toward each other by means of a bolt 18 the two rings 1 and 4 are rigidly clamped together.

Any desired number of pairs of rings may be employed to constitute a flask, and a Wide range of adjustment is possible by means of the inclined surfaces. WVhen the desired adjustment is effected, the rings maybe clamped together by the bolts 18 or by any other suitable means, and the flask is ready for use.

The number of inclined surfaces may be either greater or less than we have shown, and the form and arrangement of parts may be otherwise modified within the scope of our invention, if desired.

WVe claim as our invention 1. A molders flask comprising two concentric rings having cooperating, inclined surfaces and means for clamping said rings together.

2. A molders flask comprising two concentric rings having inclined surfaces that engage each other and one of which has an annular grooveand the other an annular pro- ICC jection located in said groove, and means for clamping said rings together in any position to which they may be relatively adjusted.

3. A molders flask comprising an annularly-grooved ring having one or more inclined surfaces outside the groove, a ring having an annular projection to engage said groove and one or more inclined surfaces outside the same to engage the inclined surface or surfaces of the grooved ring, and means for clamping said rings together in any position to which they may be adjusted.

4. A molders flask comprising two concentric rings that'are relatively adjustable both circumferentially and in the direction of their axis and means for clamping them together in adjusted position.

5. A molders flask comprising two concentric rings having engaging surfaces that force them apart when the one is given a clockwise rotative movement or the other is given a counter-clockwise rotative movement, and means i or clamping said rings to gether in any position to which they may be adjusted.

6. A compound flask comprising a plurality of pairs of concentric rings, the rings of each pair having engaging surfaces that force them apart when the one is given a clockwise rotative movement or the other is given a counter-clockwise rotative movement, means for locking the inner rings together and means for clamping each outer ring to the corresponding inner ring.

7. A molders flask comprising a plurality of annular members each of which consists of two concentric rings having engaging surfaces that force them apart when the one is given a clockwise rotative movement or the other is given a counter-clockwise rotative movement, means for looking all rings of one kind together against independent rotative movement and means for clamping each pair of rings together.

8. A molders flask comprising a plurality of annular members each of which consists of two concentric rings having inclined engaging surfaces that force them apart when the one is given a clockwise rotative movement or the other is given a counter-clockwise rotative movement, means for locking the inside rings together against independent rotative movement and means for clamping each outside ring to the corresponding inside ring.

9. A molders flask comprising a plurality of annular members each of which consists of two telescoping rings having mutually-engaging inclined surfaces, means for locking the inner rings against independent circumferential movement and means for clamping each outer ring to the corresponding inner rmg.

10. A molders flask comprising two concentric rings having cooperating, inclined surfaces by means of which clockwise rotative movement of the one ring will increase the depth of the flask and clockwise rotative movement of the other ring will decrease the depth.

In testimony whereof we have hereunto subscribed our names this 11th day of February, 1905. FRANK J. HEPP.

GEO. J. BORN. Witnesses as to signature of Frank J. I-Iepp:

J. WV. SPEAKMAUX, BIRNEY HINEs. Witnesses as to signature of Geo. J. Born:

G. W. GEIER, BIRNEY HINES. 

